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EP 3 170 319 A1

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(43) Date of publication: 24.05.2017 Bulletin 2017/21 (21) Application number: 15821757.0 (22) Date of filing: 15.06.2015

(51) International Patent Classification (IPC):  H04R 9/04(2006.01) H04M 1/03(2006.01) H04R 9/02(2006.01) B29C 45/16(2006.01) (86) International application number: PCT/FI2015/050433 (87) International publication number: WO 2016/009107 (21.01.2016 Gazette 2016/03)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: MA (30) Priority: 15.07.2014 US 201414331655 (71) Applicant: Nokia Technologies Oy 02610 Espoo (FI)	(72) Inventors: SHI, Shengrong San Diego, California 92128 (US) YANG, Yuanjia Beijing 10076 (CN) GUO, Jian San Diego, California 92128 (US) LOPEZ, Oscar Descanso, California 91916 (US) (74) Representative: Nokia Corporation  Intellectual Property Department Karakaari 7 02610 Espoo 02610 Espoo (FI)